Kathleen V. Ryley and Julia Bell 
415 
to the smallness of our samples. Except in the case of Egyptians and English, the 
size of these samples was not under our control; we set out to compare the African 
and Asiatic anthropoids with the human races of the same environment, and we 
measured all the crania available, and calculated the variabilities for all series of 
10 and over*. Further the homogeneity of some of the series, as the Malay aud 
Javanese, is possibly open to doubt. We have accordingly clubbed together our 
variation results for the coefficients of variation of the absolute measurements, 
with the results given in Table XVIII. 
TABLE XVIII. 
Average Values of Variability of Absolute Measurements on the 
Nasal Bridge. 
With Siraotic Lengths 
Without Sirao 
tic Lengths 
s 
? 
6 
? 
Chimpanzees . . . 
23-4 
22-4 
Chimpanzees ... 
18-0 
20-8 
Gorillas 
20-5 
23-6 
Gorillas 
16-5 
17-5 
Orangs 
Orangs 
16-3 
12-3 
[Hylobates $ + $ 23'4] 
[Hylobates $ + ? 15'1] 
Mean 22:5 t 
Mean 
16-9 1 
Malays 
19-8 
Malays 
12-6 
Javanese 
19-7 
Javanese 
12-3 
Mean 19 -8 
Mean 
J 
2-5 
Congo ... 
20-0 
18-9 
Congo ... 
13-5 
10-1 
Gaboon (1864) 
19'3 
19-8 
Gaboon (1864) 
10-3 
12-9 
Gaboon (1880) 
17-6 
18-5 
Gaboon (1880) 
10-1 
11-9 
Mean 19'0 
Mean 
11-5 
Philippines 
17-5 
Philippines 
11-2 
Borneo... 
17-4 
18-2 
Borneo... 
10-5 
9-7 
Mean 
17-7 
Mean 
10-5 
Veddahs 
15-9 
18-0 
Veddahs 
12-7 
11-9 
Hindoos 
15-2 
Hindoos 
11-7 
Mean lG'J^ 
Mean 
12-1 
Egyptians 
13-2 
14-G 
Egyptians 
8-7 
11-5 
English 
13-7 
13-9 
English 
9-3 
10-3 
Mean 
IS -8 
Mean 
10-0 
General Means 
17-9 
18-7 
General Means 
12-5 
12-9 
* Nubians excepted : these were included at a later date, 
t Hylobates not included. 
53—2 
/ 
